Image : Flutter permission handler by mahir

Flutter permission for webview/ camera permission flutter

In order to be able to use camera, for example, for taking images through <input type="file" accept="image/*" capture> HTML tag, you need to ask camera permission. If you need to capture video and audio, you need to ask also microphone permission.
To ask permissions, for this I would recommend to use permission_handler plugin!

Code example:

import 'package:permission_handler/permission_handler.dart';
Future main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Permission.camera.request();
  await Permission.microphone.request(); // if you need microphone permission
  runApp(MyApp());
}

Configure Android

On Android, you need to add these permissions in your AndroidManifest.xml file to be able to use camera for taking images and videos:

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
<uses-permission android:name="android.permission.VIDEO_CAPTURE" />
<uses-permission android:name="android.permission.AUDIO_CAPTURE" />

Also, you need to add the following code inside the <application> tag of your AndroidManifest.xml file:

<provider
    android:name="com.pichillilorenzo.flutter_inappwebview.InAppWebViewFileProvider"
    android:authorities="${applicationId}.flutter_inappwebview.fileprovider"
    android:exported="false"
    android:grantUriPermissions="true">
    <meta-data
        android:name="android.support.FILE_PROVIDER_PATHS"
        android:resource="@xml/provider_paths" />
</provider>

Configure iOS

On iOS, you need to add the following properties in your Info.plist file to be able to use camera for taking images and videos:

<key>NSMicrophoneUsageDescription</key>
<string>Flutter requires acess to microphone.</string>
<key>NSCameraUsageDescription</key>
<string>Flutter requires acess to camera.</string>

If you open this file In Xcode, then the NSMicrophoneUsageDescription property is represented by Privacy - Microphone Usage Description and NSCameraUsageDescription is represented by Privacy - Camera Usage Description.

Important Notes: Apple store require the permission message to be natural and realistic.

You can know more in this page from apple for accessing privacy data